Zobrazeno 1 - 10
of 130
pro vyhledávání: '"Marian WNUK"'
Autor:
Marian Wnuk
Publikováno v:
Scientific Journal of Gdynia Maritime University, Iss 132 (2024)
The article presents a new broadband TSA antenna with a widening aperture, which is to be the basic radiating element in a multi-element antenna. The TSA antenna is characterized by a low-value standing wave ratio (SWR) covering the widest possible f
Externí odkaz:
https://doaj.org/article/67ca335c909c49b48cdbfa1493c3603d
Autor:
Konrad Szczepankiewicz, Marian Wnuk
Publikováno v:
Biuletyn Wojskowej Akademii Technicznej, Vol 72, Iss 1, Pp 59-68 (2023)
The article describes the types of hardware attacks targeting embedded systems,countermeasures, and methods of modelling security threats. In currently used electronic devices, thesoftware usually ensures very high level of security. On the other han
Externí odkaz:
https://doaj.org/article/a86933a174e14e048cdd9e74dd5b4de2
Autor:
Mateusz Gajowniczek, Marian Wnuk
Publikováno v:
Biuletyn Wojskowej Akademii Technicznej, Vol 71, Iss 4, Pp 61-72 (2022)
The article describes currently available knowledge related to the universally understoodissues of electromagnetic compatibility. It describes the basic concepts that will allow you to understandhow broad this scientific field is and how much it affe
Externí odkaz:
https://doaj.org/article/6c186360d39f456ab1a8507e5137c99f
Autor:
Rafał Nogły, Marian Wnuk
Publikováno v:
Biuletyn Wojskowej Akademii Technicznej, Vol 71, Iss 4, Pp 111-120 (2022)
The article deals with the currently available devices used in sensor networks to examinehuman vital signs and the available knowledge about sensors and their sensitivity to electromagneticinterference. The article contains the basic concepts describ
Externí odkaz:
https://doaj.org/article/4b0acc2b2bf94325b4b4b7182c59af50
Autor:
Marian Wnuk
Publikováno v:
Algorithms, Vol 17, Iss 2, p 81 (2024)
An important element of modern telecommunications is wireless radio networks, which enable mobile subscribers to access wireless networks. The cell area is divided into independent sectors served by directional antennas. As the number of mobile netwo
Externí odkaz:
https://doaj.org/article/706d6c239cc246b08b60993711f53039
Autor:
Marian Wnuk
Publikováno v:
Archives of Electrical Engineering, Vol vol. 70, Iss No 3, Pp 705-718 (2021)
The paper presents a series of designed microstrip antennas with different gain and width radiation characteristics and intended for use in Wi-Fi systems. These antennas in a multilayer system were analyzed with the use of computer programs, and then
Externí odkaz:
https://doaj.org/article/4643af6fb8884006b61f1954df9df909
Autor:
Marian Wnuk
Publikováno v:
Scientific Journal of Gdynia Maritime University, Iss 123 (2022)
The last dozen or so years has seen significant and dynamic development in satellite technologies. Devices using satellites circulating in space for the purposes of general communication have ceased to be the domain of a narrow group of recipients (m
Externí odkaz:
https://doaj.org/article/1f0d833a0df3465dad03bcdebdb432de
Autor:
Marian Wnuk
Publikováno v:
Applied Sciences, Vol 12, Iss 9, p 4185 (2022)
The spectral response of the periodic antenna structure placed in a dielectric homogeneous medium depends on the antenna geometry, the parameters of the medium, the angle of incidence, polarization, and the geometry of the excitation field. Increasin
Externí odkaz:
https://doaj.org/article/929a51cbce6044dca610a97615f1620b
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 2 (2005)
During the last years we have observed fast development of the electronic devices and electronic warfare systems (EW). One of the most principal functions of the ESM/ELINT system is gathering basic information from the entire electromagnetic spectrum
Externí odkaz:
https://doaj.org/article/004c2a8b97f34e65ab02be288069a6ab
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 1 (2003)
The appropriate emitter database is one of the most important elements in the present electronic intelligence (ELINT) system. This paper provides an overview of the relational modelling, which is used to construct the emitter database for current ELI
Externí odkaz:
https://doaj.org/article/da8707c9c0d74aa8ba2c0781556eeb44